Abstract: A method of recommending an object, an electronic device, and a storage medium are provided. The method includes: determining, in response to receiving target user behavior data of a target user from a target client, a target object according to the target user behavior data and at least one candidate user behavior data corresponding to a plurality of candidate users; and sending the target object to the target client, so as to recommend the target object to the target user, where each of the candidate user behavior data is stored in a predetermined block chain, each of the candidate user behavior data corresponds to at least one of a plurality of block chain nodes contained in a block chain network, and each of the candidate user behavior data indicates a preference of a candidate user for at least one candidate object.

Abstract: The present application provides a preparation method for a core-shell structured tungsten/gadolinium oxide functional fiber for X and ? ray protection, comprising: first preparing a core-shell structured tungsten/gadolinium oxide powder; preparing a W@Gd2O3/PP blended melt from the powder; and preparing a W@Gd2O3/PP composite fiber from the blended melt. The core-shell structured tungsten/gadolinium oxide functional fiber prepared by the method can play a role in synergistic protection in the aspect of radiation protection, eliminate a weak protection area, and effectively absorb secondary radiation generated by radiation. Secondly, the prepared functional fiber has the characteristics of no lead and light weight, and has good application prospects in the aspect of X and ? ray radiation protection.

Abstract: In the technical field of display devices, there is a problem of low efficiency in image appearance inspection during the processing process of a display panel. In view of this, provided is an image acquisition system, comprising: a control device, an object loading device and an image acquisition apparatus. The control device is used for obtaining a target value of displacement between the object loading apparatus and the image acquisition apparatus according to an image signal, generating a control command, which carries the target displacement value, and then sending the control command to at least one of the object loading device and the image acquisition apparatus; and at least one of the object loading apparatus and the image acquisition apparatus moves according to the control command, until the definition of the image signal received by the control device in real time is greater than a preset definition threshold value.

Abstract: A method for compensating display of a spliced screen, including: obtaining a picture to be displayed; obtaining a theoretical brightness gain of at least one sub-display region in a plurality of sub-display regions; obtaining an actual brightness gain of the central region according to the theoretical brightness gain of at least part of the sub-display regions, and obtaining actual brightness gains of a plurality of first nodes in the non-central region according to the theoretical brightness gain of at least part of the sub-display regions; obtaining an actual brightness gain of at least part of the non-central region by using a bilinear interpolation method according to the actual brightness gains of the plurality of first nodes and an actual brightness gain of at least one second node on the central region; and compensating the picture to be displayed based on an actual brightness gain of the picture to be displayed.

Abstract: The present application provides a preparation method for a core-shell structured tungsten/gadolinium oxide functional fiber for X and ? ray protection, comprising: first preparing a core-shell structured tungsten/gadolinium oxide powder; preparing a W@Gd2O3/PP blended melt from the powder; and preparing a W@Gd2O3/PP composite fiber from the blended melt. The core-shell structured tungsten/gadolinium oxide functional fiber prepared by the method can play a role in synergistic protection in the aspect of radiation protection, eliminate a weak protection area, and effectively absorb secondary radiation generated by radiation. Secondly, the prepared functional fiber has the characteristics of no lead and light weight, and has good application prospects in the aspect of X and ? ray radiation protection.

Abstract: Disclosed are a method, device and system for sending a virtual card and a readable storage medium, which are configured to receive at least one audio-video stream data of a plurality of participant terminals in communication connection with a server side; determine target audio-video stream data corresponding to at least one speaker from the at least one audio-video stream data; obtain biological characteristic information for identifying the at least one speaker from the target audio-video stream data, the biological characteristic information includes face characteristic information and/or voiceprint characteristic information; generate a virtual card according to the biological characteristic information; overlay the virtual card to the target audio-video stream data, and synthesize the target audio-video stream data with other audio-video stream data in response to there being a plurality of audio-video stream data into a to-be-sent audio-video stream data; send the to-be-sent audio-video stream data to

Abstract: Disclosed are a method, device and system for sending a virtual card and a readable storage medium, which are configured to receive at least one audio-video stream data of a plurality of participant terminals in communication connection with a server side; determine target audio-video stream data corresponding to at least one speaker from the at least one audio-video stream data; obtain biological characteristic information for identifying the at least one speaker from the target audio-video stream data, the biological characteristic information includes face characteristic information and/or voiceprint characteristic information; generate a virtual card according to the biological characteristic information; overlay the virtual card to the target audio-video stream data, and synthesize the target audio-video stream data with other audio-video stream data in response to there being a plurality of audio-video stream data into a to-be-sent audio-video stream data; send the to-be-sent audio-video stream data to

Abstract: A positioning method performed at a server includes: receiving, at a frequency, arrival time information from a plurality of readers; determining, according to the arrival time information, that the tag is in a sensing auxiliary region of a positioning region; sending a first control command to one of the readers, so that the tag activates an inertial sensor thereof according to the first control command; receiving, from the reader, position information of the tag in the sensing auxiliary region obtained by the inertial sensor; determining, according to the position information of the tag in the sensing auxiliary region, a first motion trajectory of the tag in the sensing auxiliary region; and determining, according to the first motion trajectory, whether the tag enters one of the first regions.

Abstract: Provided are a method and an apparatus for controlling power consumption, a board, an electronic device and a storage medium. The method is applied to a board, and the board includes a dynamic random memory. The method includes: obtaining a data flow of the board; and controlling an active bandwidth of the dynamic random memory according to the data flow.

Abstract: The present disclosure provides a vehicle positioning method, including: a first controller synchronously controlling each first beacon node to send a detection initial signal; a second controller determining a target beacon node among second beacon nodes and controlling the target beacon node to send a detection feedback signal; the first controller synchronously controlling each first beacon node to send a corresponding detection signal to be responded and recording a first moment of sending the detection signal to be responded; the second controller controlling the target beacon node to send a detection response signal; the first controller recording a second moment of receiving the detection response signal and determining a distance between each first beacon node and the target beacon node according to the first moment and the second moment, so as to determine a position of the target beacon node relative to the first vehicle.

Abstract: The present disclosure provides a keyboard, including: a keyboard body; at least one physical key disposed on the keyboard body; at least one virtual key projection device connected to the keyboard body and configured to present, by means of projection, an image of at least one virtual key in a projection area outside the keyboard body; and a click detection device configured to detect whether a finger clicks on the projection area and determine on which virtual key the finger clicks in response to that the finger clicks on the projection area.

Abstract: The present disclosure provides a screenshot method for an information interaction interface, including: detecting a screenshot operation; acquiring information corresponding to the information interaction interface in response to the screenshot operation, wherein the information corresponding to the information interaction interface includes at least one piece of display information currently displayed in the information interaction interface; displaying an editing interface including at least one piece of editable information, wherein each piece of editable information corresponds to one piece of display information; and editing display content of the editing interface in response to an operation on the editing interface to generate a final display picture including at least the edited display content. In addition, the present disclosure also provides a screenshot apparatus for an information interaction interface, a computing device, and a computer-readable storage medium.

Abstract: A method for detecting a display panel defect, including: collecting a panel image of a to-be-detected display panel, a plurality of first pixels of the display panel corresponding to a plurality of second pixels in the panel image; converting the panel image into a binary image; dilating each bright spot region in the binary image such that adjacent bright spot regions communicate with each other to form at least one closed communication region in the binary image; determining a region of interest mask image in the binary image in accordance with the at least one closed communication region; determining a region of interest in accordance with the region of interest mask image and the panel image; and performing feature identification on the region of interest to determine a defect of the display panel.

Abstract: Provided is a method for implementing a video conference. The method includes: acquiring layout information of a conference screenconference picture of the video conference, wherein the layout information comprises: information of at least two conferee regions in the conference picture, and information of corresponding relationships between the at least two conferee regions and at least two terminals involved in the video conference; sending the information of the corresponding conferee regions to the at least two terminals; receiving conferee multimedia data provided by the at least two terminals based on the information of the corresponding conferee regions; acquiring conference video data based on the conferee multimedia data; and sending the conference video data to the at least two terminals.

Abstract: Provided are a method and an apparatus for controlling power consumption, a board, an electronic device and a storage medium. The method is applied to a board, and the board includes a dynamic random memory. The method includes: obtaining a data flow of the board; and controlling an active bandwidth of the dynamic random memory according to the data flow.

Abstract: The present disclosure provides a screenshot method for an information interaction interface, including: detecting a screenshot operation; acquiring information corresponding to the information interaction interface in response to the screenshot operation, wherein the information corresponding to the information interaction interface includes at least one piece of display information currently displayed in the information interaction interface; displaying an editing interface including at least one piece of editable information, wherein each piece of editable information corresponds to one piece of display information; and editing display content of the editing interface in response to an operation on the editing interface to generate a final display picture including at least the edited display content. In addition, the present disclosure also provides a screenshot apparatus for an information interaction interface, a computing device, and a computer-readable storage medium.

Abstract: The present disclosure provides a vehicle positioning method, including: a first controller synchronously controlling each first beacon node to send a detection initial signal; a second controller determining a target beacon node among second beacon nodes and controlling the target beacon node to send a detection feedback signal; the first controller synchronously controlling each first beacon node to send a corresponding detection signal to be responded and recording a first moment of sending the detection signal to be responded; the second controller controlling the target beacon node to send a detection response signal; the first controller recording a second moment of receiving the detection response signal and determining a distance between each first beacon node and the target beacon node according to the first moment and the second moment, so as to determine a position of the target beacon node relative to the first vehicle.

Abstract: A positioning method performed at a server includes: receiving, at a frequency, arrival time information from a plurality of readers; determining, according to the arrival time information, that the tag is in a sensing auxiliary region of a positioning region; sending a first control command to one of the readers, so that the tag activates an inertial sensor thereof according to the first control command; receiving, from the reader, position information of the tag in the sensing auxiliary region obtained by the inertial sensor; determining, according to the position information of the tag in the sensing auxiliary region, a first motion trajectory of the tag in the sensing auxiliary region; and determining, according to the first motion trajectory, whether the tag enters one of the first regions.

Abstract: A vascularized full thickness tissue engineered skin assembled by hydrogel, nanofibrous scaffolds and skin cell layers and a preparation method thereof relate to a technical field of polymer materials and biomedical materials. The artificial tissue engineered skin includes an epidermis layer and a dermis layer. The epidermal layer is formed by alternately stacking upper nanofibrous scaffolds located above the dermis layer and a kind of seed cells. The dermis layer is formed by lower nanofibrous scaffolds, the hydrogel layer above the lower nanofibrous scaffolds, and three kinds of seed cells distributed on surfaces of the lower nanofibrous scaffolds as well as inside and on a surface of the hydrogel layer. The artificial tissue engineered skin is prepared by a combination of electrospinning technology, polymer complexation technology and fiber/cell layer-gel layer-fiber/cell layer self-assembly technology.

Abstract: This invention discloses a novel compound with the structure of formula I, or pharmaceutically acceptable salts or solvates thereof. In addition, the invention further discloses a method for preparing the compound, a pharmaceutical composition containing the compound, and use thereof in the preparation of a hypoglycemic medicament.